I had thought that I read somewhere that BOS could adjust the frequency on every chip. Unfortunately, after reading all 32 (?) pages here and searching, I cannot find that again. Can someone enlighten me on where this is in the web interface. I've installed it, can only find where I can set just the voltage / frequency per board.
And (this may sound snooty - but it's not meant to be) any other actual documentation for the using (not installing) of BOS? Especially from a not-so-much-unix persons view for parameter files and command line directives.
No it doesn't. You can manually set the frequencies and voltages per hash board, and that's it. The usage is similar to the factory firmware, you just set the pool you want it to mine to, and that's it. You cannot get any simpler than that.
Ideally you should lower the voltages to find the optimum efficiency, this take many tries until you find the lowest setting the hashboard still works without deviating too much from its intended hashrate.
The official documentation is here:
https://docs.braiins-os.org/